(SHUFFLE): Unsupported on DLA switching to GPU

Please provide complete information as applicable to your setup.

• Hardware Platform (Jetson / GPU) Jetson AGX Orin
• DeepStream Version6.2
**• JetPack Version (valid for Jetson only)**5.1
• TensorRT Version8.5.2
I have converted a facenet model (Face Recognition) from PyTorch to .ONNX to be used in deepstream configuration file. However, running the config file to generate engine file that is running on DLA will cause shuffle layers which were are not part of the model itself to fall back to GPU.
As per TRT documentation DLA do support shuffle layers but why in my case they fall back to the GPU. Additionally, how these shuffle layers were imported to the model since the original model does not have shuffle layers.
FaceNet_DLAEngine_unsupportedLayers.txt (9.8 KB)

I have attached the log file generated during engine file creation.


The layers are added automatically to meet DLA requirements.
You can find more info in the below repo:



Thank you for your reply.
I see that Shuffle layers are added 28 time and constant layers are added 28 time. The model it self has 22 layers as below.

what’s the exact requirement by the DLA that requires these shuffle/constant layers to be added. Is it due to reconstruction process? becuase this much of shuffle layers have caused delay in processing as they fall back to the gpu which will cause back and forth data transmission between Gpu/dla

I see contact is presented by (See REF) in tensorrt column and Native in DLA. what does this mean?
In my case it fell back to the GPU why did it fall back if it’s native to DLA

@AastaLLL please support


Sorry for the late update.

It looks like a new topic has been opened recently.
We can follow up the discussion there and close this one.